<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page import="java.util.List" %>
<%@ page import="java.util.ArrayList" %>
<%@ page import="java.sql.Connection" %>
<%@ page import="java.sql.Statement" %>
<%@ page import="java.sql.ResultSet" %>
<%@ page import="java.sql.DriverManager" %>
<%@ page import="edu.sctu.User" %><%--
  Created by IntelliJ IDEA.
  User: tianxiadiyishuai
  Date: 2018/5/20
  Time: 13:22
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="ja va" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
<%
    if (session.getAttribute("username")==null){
        //跳转
        response.sendRedirect("login.jsp");
    }
%>

<style type="text/css">
    table{
        border-collapse: collapse;
    }
    td{
        border: 1px solid #000;
        padding: 10px;
    }
</style>

<!--include动作-->b
<jsp:include page="header.jsp"></jsp:include>


<table>
    <thead>
    <tr>
        <td>编号</td>
        <td>姓名</td>
        <td>密码</td>
        <td>删除操作</td>
        <td>更新操作</td>
    </tr>
    </thead>
    <tbody>
    <%

        List<User> list=new ArrayList<User>();

//            User chen = new User();
//            chen.id=1;
//            chen.username="chengongsuo";
//            chen.password="123";

        //3+1
        Connection connection=null;
        Statement statement=null;
        ResultSet resultSet=null;

        String sql="select * from t_users";

        Class.forName("com.mysql.jdbc.Driver");

        connection = DriverManager.getConnection(
                "jdbc:mysql://localhost:3306/sctu_javaweb_2018?serverTimezone=UTC",
                "root",
                "123456"
        );

        statement =connection.createStatement();
        resultSet =statement.executeQuery(sql);


        while (resultSet.next()){
            int id = resultSet.getInt(1);
            String username = resultSet.getString(2);
            String password = resultSet.getString(3);

            User u = new User();
            u.setId(id);
            u.setUsername(username);
            u.setPassword(password);
            list.add(u);
        }
        resultSet.close();
        statement.close();
        connection.close();
//            list.add(chen);

        pageContext.setAttribute("userlist",list);
    %>
    <c:forEach var="user" items="${list}">
        <tr>
            <td>${user.id}</td>
            <td>${user.username}</td>
            <td>${user.password}</td>
            <td><a href='deleteUserHandler.jsp?id="+user.id+ "'>删除</a></td>
            <td><a href='userUpdate.jsp?id="+user.id+"&username="+user.username+"&password="+user.password+"'>更新</a></td>
        </tr>
    </c:forEach>




    </tbody>
</table>

<!--include 指令-->
<%@include file="footer.jsp"%>
</body>
</html>
